93AA66A Microchip Technology, 93AA66A Datasheet - Page 4

• Manufacturer Part Number: 93AA66A
• Description: (93AA66A - 93AA66C) 4K Microwire Compatible Serial EEPROM
• Manufacturer: Microchip Technology

93AA66A/B/C, 93LC66A/B/C, 93C66A/B/C
FIGURE 1-1:
TABLE 1-3: INSTRUCTION SET FOR X 16 ORGANIZATION (93XX66B OR 93XX66C WITH ORG = 1)
TABLE 1-4: INSTRUCTION SET FOR X 8 ORGANIZATION (93XX66A OR 93XX66C WITH ORG = 0)
DS21795B-page 4
ERASE
ERAL
EWDS
EWEN
READ
WRITE
WRAL
ERASE
ERAL
EWDS
EWEN
READ
WRITE
WRAL
(PROGRAM)
Instruction
Instruction
Note:
(READ)
CLK
DO
DO
CS
DI
T
SV
V
V
V
V
V
V
V
V
V
V
OL
OH
OL
OH
SB
SB
IH
IH
IL
is relative to CS.
IL
IH
1
1
1
1
1
1
1
1
1
1
1
1
1
1
IL
T
SYNCHRONOUS DATA TIMING
T
Opcode
Opcode
DIS
SV
00
00
00
10
01
00
00
00
00
10
01
00
11
11
T
CSS
A8 A7 A6 A5 A4 A3 A2 A1 A0
A8 A7 A6 A5 A4 A3 A2 A1 A0
A8 A7 A6 A5 A4 A3 A2 A1 A0
A7 A6 A5 A4 A3 A2 A1 A0
A7 A6 A5 A4 A3 A2 A1 A0
A7 A6 A5 A4 A3 A2 A1 A0
1
0
1
0
1
0
1
0
0
0
1
1
0
0
1
1
X
X
X
X
X
X
X
X
T
CKH
T
Address
X
X
X
X
T
Address
PD
X
X
X
X
DIH
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
STATUS VALID
X
X
X
X
T
CKL
X
X
X
X
X
X
X
X
D15 – D0
D15 – D0
Data In
D7 – D0
D7 – D0
Data In
—
—
—
—
—
—
—
—
—
—
(RDY/BSY)
(RDY/BSY)
(RDY/BSY)
(RDY/BSY)
Data Out
D15 – D0
(RDY/BSY)
(RDY/BSY)
(RDY/BSY)
(RDY/BSY)
 2003 Microchip Technology Inc.
HIGH-Z
HIGH-Z
Data Out
D7 – D0
HIGH-Z
HIGH-Z
T
PD
Req. CLK Cycles
Req. CLK
Cycles
T
T
27
27
27
11
11
11
11
T
CZ
CZ
12
12
12
12
20
20
20
CSH